1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 03 2011 12 07 N Status No replacement named N. Benipal, NA 2005 07 28 Revised Inserted 3.0; Deleted 3.5 & 4 1971 01 11 Was XF-M99PX4 F6Z-487 Controlled document at www.MATS Copyright 2011, Ford Global Technologies, LLC Page 1 of 2 PAINT,
2、POWDERED, THERMOSETTING EPOXY ESF-M70J1-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE This specification defines the performance requirements for a thermosetting epoxy powder applied by the electrostatic method to a metal part. 2. APPLICATION This specification was released originally for coating extreme
3、ly corrosive environments within the emission system. This coating does not possess the ultraviolet stability which would permit exterior decorative applications. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Sta
4、ndard Requirements For Production Materials (WSS-M99P1111-A). 3.1 TEST PANELS Chemically cleaned low carbon steel panels shall be electrostatically sprayed with epoxy powder and cured at 205 C for 5 min. 3.1.1 Hardness, Knoop 10 - 15 (ASTM D 1474, Method “A“) 3.1.2 Adhesion No flaking or chipping (F
5、LTM BI 106-01) 3.1.3 Salt Spray, min 240 h (FLTM BI 103-01) 3.1.4 Thermal Shock Resistance Must pass the following: Place the test panel in a circulating air oven at 155 C for 30 min. Remove and quench in cold water. Dry and immerse in an alcohol-dry ice solution at -75 C for 10 min. Remove and insp
6、ect for signs of cracking, crazing, or loss of adhesion. Repeat above cycle 9 more times. At the end of the 10 cycles there must be no cracking, crazing, or signs of adhesion loss. 3.1.5 Thickness, min 0.001 in (30 m) (ASTM D 1186) ENGINEERING MATERIAL SPECIFICATION ESF-M70J1-A Copyright 2011, Ford
7、Global Technologies, LLC Page 2 of 2 3.1.6 Cure There must be no softening of coating or evidence of color rubbing off when a cloth dipped in MEK or acetone is rubbed over the surface of the resin. 3.2 FINISHED PARTS 3.2.1 Appearance The coating shall be continuous and free of blisters, cracks, bubb
8、les, undercoating voids or mechanical damage. 3.2.2 Adhesion No flaking or chipping (FLTM BI 106-01) 3.2.3 Salt Spray, min 240 h (FLTM BI 103-01) 3.2.4 Thickness, min 0.001 in (30 m) (ASTM D 1186) 3.2.5 Cure There must be no softening of coating or evidence of color rubbing off when a cloth dipped i
9、n MEK or acetone is rubbed over the surface of the resin. 3.3 TOXICITY This material shall be considered as relatively non-toxic compared to liquid epoxies. However, since it is an epoxy, care should be taken to avoid prolonged exposure to the skin. This material should be used in a closed system to reduce the possibility of breathing the powder. 3.4 EXPLOSION HAZARD As stated, the material should be used in a closed system because of the possibility of dust explosion present in powdered material.
